Lock bolt



FIG. 1 is a front perspective view of a lock bolt showing my new design;

FIG. 2 is a rear perspective view of the design of FIG. 1.

FIG. 3 is a top view of the design of FIG. 1.

FIG. 4 is a bottom view of the design of FIG. 1.

FIG. 5 is a left side view of the design of FIG. 1.

FIG. 6 is a right side view of the design of FIG. 1.

FIG. 7 is a front view of the design of FIG. 1; and,

FIG. 8 is a rear view of the design of FIG. 1. 

The ornamental design for a lock bolt, as shown and described. 